Quick answer:
The John Deere 240 battery size is listed as 12 V.
Voltage12 V
John Deere 240 Battery Specs
| Battery voltage | 12 V |
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Battery Spec Comparisons Chart
Voltage comparison
John Deere 240 Battery FAQ
| Replacement battery recommendation | The best replacement battery for the John Deere 240 tractor is the AJC-U1-300-188914, which is a 12V Sealed Lead Acid (AGM) battery designed for reliable performance. It is maintenance-free and arrives fully charged, ready for installation |
|---|---|
| Battery voltage | The official battery voltage for the John Deere 240 tractor is 12 volts |
| Battery group size | The official battery group size for the John Deere 240 tractor is U1 |
| Battery CCA | The recommended official John Deere 240 tractor battery has a Cold Cranking Amps (CCA) rating of 350. This ensures reliable starting power in cold conditions |
| Battery location | The battery on the John Deere 240 tractor is located underneath the right access step. You may need to open the flap and remove the access step to reach it |
| Battery replacement steps | To replace the battery on a John Deere 240 tractor, first disconnect the negative (-) cable, then the positive (+) cable, and remove the battery hold down. After that, lift the battery out and install the new one by reversing the steps |
| Bad battery symptoms | Common symptoms of a failing battery in a John Deere 240 tractor include hard starting or no response when trying to start, rapid battery drain, and corrosion on battery terminals. If the battery is only holding 11.5V or less, it likely needs to be replaced |
Official information note
Mistakes do happen. Please check official deere.com website for official information.







